<%--
  Created by IntelliJ IDEA.
  User: admin
  Date: 2021/8/29
  Time: 20:47
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%--		分页条的开始--%>
<div id="page_nav">
    <c:if test="${requestScope.page.pageNo>1}">
        <a href="${requestScope.page.url}&pageNo=1">首页</a>
        <a href="${requestScope.page.url}&pageNo=${requestScope.page.pageNo-1}">上一页</a>
    </c:if>
    <%--页码输出的开始--%>
    <c:choose>
        <%--总页码小于等于5的情况页码范围是1-总页码--%>
        <c:when test="${requestScope.page.pageTotal<=5}">
            <c:forEach begin="1" end="${requestScope.page.pageTotal}" var="i">
                <c:if test="${i==requestScope.page.pageNo}">
                    【${i}】
                </c:if>
                <c:if test="${i!=requestScope.page.pageNo}">
                    <a href="${requestScope.page.url}&pageNo=${i}">${i}</a>
                </c:if>
            </c:forEach>
        </c:when>

        <c:when test="${requestScope.page.pageTotal>5}">
            <c:choose>
                <c:when test="${requestScope.page.pageNo<=3}">
                    <c:forEach begin="1" end="5" var="i">
                        <c:if test="${i==requestScope.page.pageNo}">
                            【${i}】
                        </c:if>
                        <c:if test="${i!=requestScope.page.pageNo}">
                            <a href="${requestScope.page.url}&pageNo=${i}">${i}</a>
                        </c:if>
                    </c:forEach>
                </c:when>
                <%--						小情况2：当前页码为最后3个8，9，10，页码范围是：总页码减4，得到总页码--%>
                <c:when test="${requestScope.page.pageNo>requestScope.page.pageTotal-3}">
                    <c:forEach begin="${requestScope.page.pageTotal-4}" end="${requestScope.page.pageTotal}" var="i">
                        <c:if test="${i==requestScope.page.pageNo}">
                            【${i}】
                        </c:if>
                        <c:if test="${i!=requestScope.page.pageNo}">
                            <a href="${requestScope.page.url}&pageNo=${i}">${i}</a>
                        </c:if>
                    </c:forEach>
                </c:when>
                <%--						小情况3：4,5,6,7页码范围是：当前页码加2--%>
                <c:otherwise>
                    <c:forEach begin="${requestScope.page.pageNo-2}" end="${requestScope.page.pageNo+2}" var="i">
                        <c:if test="${i==requestScope.page.pageNo}">
                            【${i}】
                        </c:if>
                        <c:if test="${i!=requestScope.page.pageNo}">
                            <a href="${requestScope.page.url}&pageNo=${i}">${i}</a>
                        </c:if>
                    </c:forEach>
                </c:otherwise>
            </c:choose>
        </c:when>
    </c:choose>
    <%--页码输出的结束--%>
    <c:if test="${requestScope.page.pageNo<requestScope.page.pageTotal}">
        <a href="${requestScope.page.url}&pageNo=${requestScope.page.pageNo+1}">下一页</a>
        <a href="${requestScope.page.url}&pageNo=${requestScope.page.pageTotal}">末页</a>
    </c:if>

    共${requestScope.page.pageTotal}页，${requestScope.page.pageTotalCount}记录 到第<input value="${param.pageNo}" name="pn" id="pn_input"/>页
    <input id="searchPageBtn" type="button" value="确定">
    <script type="text/javascript">
        $(function () {
            $("#searchPageBtn").click(function () {
                var pageNo=$("#pn_input").val();
                var pageTotal=${requestScope.page.pageTotal};
                //javaScript中提供了一个Location地址栏对象
                //它有一个属性叫href可以获取浏览器地址栏中的地址
                //href属性可读，可写
                if(pageNo>0&&pageNo<=pageTotal){
                    location.href="${pageScope.basePath}/${requestScope.page.url}&pageNo="+pageNo;
                }

            })
        })

    </script>
</div>
<%--		分页条的结束--%>